MSP Pie lists 13 providers offering Microsoft in South Australia. In short, microsoft is a technology vendor whose products some providers specialise in deploying and managing. Comparing providers here usually means checking their actual partner tier or certification level with this vendor, not just that they mention it.
The most common specialisms across the list in South Australia are AI and automation (6), Cyber security (5), Cloud and hosting (5), Essential Eight (4), Microsoft (4). In total, 32 distinct specialisms are represented across this group of providers in South Australia. Founding years among them range from 1997 to 2016. They are based across 9 different suburbs. Of the 13, 5 have an office in South Australia -- the others cover it as a service area. 8 of the 13 operate from more than one office across Australia.